Magnesium alloy



Patented'Dec. 31, 1940 Our invention relates t and more particularly to alloys taining aluminium, cadmium,

PATENT OFFICE MAGNESIUM ALLOY I Arthur Burkhardt, Berlin-Lichterlelde, and Ri h.

ard Knabe, Berlin-Zehlendorf,

signers to Georg rial No. 228,325.

ment, which may be bismuth.

In our co-pending application, 228,324, riled September 3, 1938, for a-Magneslum alloy of high strength and resistance to corrosion, we have close taining 1 to 15% aluminium, 10 and at least one met bismuth, lead and tin,

elements being 6 to 23%.

alloys of this class in whi entirely or partly by lead or tin, or by lead plus 15 tin.

Further inves demonstrated the fact the. alloys under high temperature c their yield point, are much increased by adding to Germany Von Giesches Erben, Breslau,

Germany, a corporation of Germany No Drawing. Application September 3, 1938, Se-

In Germany September 29,

4 Claims. (Cl. 75-168.)

0 magnesium alloys,

0! the class conand a third-ele- Serial No.

ribed magnesium alloys con- 1 to, 15% cadmium, al of the group including the total or the alloying We have also described ch bismuth is replaced tigations 01 these alloys have an alloy of the aforesaid metal in the group cerium, and lithium. Only one of the two or more or that their totalperc including t the strength of the onditlons, and

composition at least one As described in our said tion, the remainder of the alloys tially all magnesium, the phrase um being intended magn fl go impurities amounts of erally not more than 0.1 to 1%.

The strength under high tempe silver, beryllium, at therate of up, to 3%. said metals may be added, or any them may be combined. provided entage does not exceed 3%.

co-pendins applicamay be substansubstantially all to include the usual in, technical magnesium, and minor certain usual alloying elements, genrature eondi alloys in the manner depoint is also Examples oi suitable alloys according to our invention will appear irom the iollowlng table.

s e s 1 4 4 "s I e 1. i i s from 6 to 23 per cent,

It is understood that in all cases the remainder is substantially all magnesium.

We claim: y

l. A magnesium alloy containing from 1 tol5 per cent of aluminium, from 1 to 15 per" cent of 5 cadmium, and from 1 to 15 per cent 01 at least one metal selected from the group consisting of bismuth, lead and tin, the total content of said alloying elements being from 6 to 23 per cent, and an addition of up to 3 percent of at least one m metal selected from the group consisting of silver and beryllium, the remainder being substantially all magnesium.

2. A magnesium alloy containing from. 1 to 15 per cent of aluminum, from 1 to 15 per cent oi! I cadmium, and from 1 to 15 per cent of bismuth, the total content of said alloying elements being and an addition of up to 3 of at least one metal selected from the per cent mainder being substantially all magnesium.

3. A magnesium alloy containing .1 to 15 per cent aluminum, 1 to 15 per cent cadmium, 1 to 15 per cent bismuth, the total content of said alloying elements being irom 6 addition of up to 3 per cent of silver, the remainder being substantially all magnedum.

4. A magnesium alloy containing 1 to 15 per cent aluminum, 1 to 15 per cent cadmium, and from 1 to 15 per cent of at least one metal se- 30 lected from the group consisting of bismuth, lead and tin, the total content oi said alloying elements being from 8 to 23 per cent, and an addition of up to 3 per cent of silver, the remainder being substantially all magnesium.

to 23 per cent and an 25 

